a sexual encounter in which one party exhibits such insane, irrational, or bizarre behavior that the other party is left afraid of further contact

From the movie Sibyl, in which Sally Fields, portraying a victim of multiple personality disorder, has sex with some guy and ends up climbing his bookshelves while claiming to be a succession of different people and speaking in sometimes demonic-sounding voices.

I took her home, and she sibyl fucked me so hard, I ended up getting a restraining order. I still have not replaced the painting she slashed or the couch she shat on.